Engineering Constants Library
Click any value to copy it. Constants also appear as insert chips inside calculators where relevant.
Math Constants
π
Pi
Math
e
Euler's Number
Math
√2
Square root of 2
Math
√3
Square root of 3
Math
φ
Golden Ratio
Math
ln(10)
Natural log of 10
Math
Physical Constants
c
Speed of Light in Vacuum
Physical
h
Planck Constant
Physical
G
Gravitational Constant
Physical
g
Standard Gravity
Physical
k_B
Boltzmann Constant
Physical
N_A
Avogadro Constant
Physical
e
Elementary Charge
Physical
ε₀
Vacuum Permittivity
Physical
μ₀
Vacuum Permeability
Physical
R
Universal Gas Constant
Physical
σ
Stefan–Boltzmann Constant
Physical
F
Faraday Constant
Physical
Earth Constants
g⊕
Earth's Gravity
Earth
M⊕
Earth's Mass
Earth
R⊕
Earth's Radius (mean)
Earth
ρ⊕
Earth's Mean Density
Earth
v_e
Earth's Escape Velocity
Earth
P₀
Standard Atmospheric Pressure
Earth
T₀
Standard Temperature (0 °C)
Earth
Planetary Values
| Body | g (m/s²) | Mass (kg) | Radius (m) | Density (kg/m³) | Escape Velocity (m/s) |
|---|---|---|---|---|---|
| Mercury | |||||
| Venus | |||||
| Earth | |||||
| Moon | |||||
| Mars | |||||
| Jupiter | |||||
| Saturn | |||||
| Uranus | |||||
| Neptune |